The PCLD-782/782B digital input daughterboards from ProMicro feature 1500 V d.c. optical isolation on all inputs. The PCLD-782 provides 16 input channels accessible through one 20-pin flat cable connector which is standard on most PC-LabCards.
The PCLD-782B provides either 16 or 24 channels depending on the connector used. Its 20-pin connector is able to access 16 channels as well as providing a 50-pin Opto-22 connector with access to 24 channels.
Both cards have on-board screw terminals for easy input wiring. Optically-isolated signal conditioning provides isolation between separate channels, as well as between each input channel and the PC. This isolation prevents floating potential and ground loop problems while protecting the input lines from potentially damaging fault conditions.
A red LED on each input channel indicates its status. If the input signal is high, the LED is on. Each channel can be configured to work in either isolated or non-isolated mode. A variable resistor adjusts the threshold level for all 24 isolated input channels simultaneously.
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